president obama and mitt romney make final preparations for the first presidential debate. nancy cordes is on the trail if las vegas. >> i was a steelworker for 30 years. >> jeff: sick of political ads? barry petersen in california reports on a referendum trying to limit them. mandarin chinese, the world's most spoken language now required in one american school district. mark strassman goes to class. >> what is the word for hello. >> niho. >> and fighting chance, a decorated combat veteran overcomes his battle scars, fulfilling a dream on the football field. >> i didn't die that day on october 3rd, i was meant to do something more in my life. >> this is the captioning sponsored by cbs this is the "cbs evening news." >> jeff: and good evening, everyone, i'm jeff glor. after months arguing from a distance president obama and mitt romney meet face-to-face on wednesday. their first debate. it's scheduled for denver. 90 minutes focusing on domestic issues. nancy cordes is on the campaign trail tonight in las vegas, nancy, good evening. >> reporter: good evening, jeff. and to gi